package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.JwtProperties;
import com.sky.properties.WeChatProperties;
import com.sky.service.userService;
import com.sky.utils.HttpClientUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
public class userServiceImpl implements userService {

    //微信服务接口地址
    public static final String WX_LOGIN ="https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    private WeChatProperties weChatProperties;

    @Autowired
    private UserMapper userMapper;
    /**
     *微信登录
     * @param userLoginDTO
     * @return
     */
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {

        String openId = getOpenid(userLoginDTO.getCode());

        //是否为空
        if(openId==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }

        //判断是否为新用户
        User user = userMapper.getByOpenid(openId);

        if(user==null){
            user=User.builder()
                    .openid(openId)
                    .createTime(LocalDateTime.now())
                    .build();

            userMapper.insert(user);

        }

        return user;
    }


    /**
     * 调用微信接口服务 获取openid
     * @param code
     * @return
     */
    private String getOpenid(String code){
        Map<String,String> map=new HashMap<>();
        map.put("appid", weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN, map);
        JSONObject jsonObject= JSON.parseObject(json);
        return jsonObject.getString("openid");
    }

}
